Stream and Station

Most
Probable
Forecast
(1000 AF)

Most
Probable
Forecast
(% of Avg)

Reasonable
Maximum
(% of Avg)

Reasonable
Minimum
(% of Avg)

30 Year
(1961-1990)
Avg Runoff
(1000 AF)

GREY'S RIVER
Palisades abv, WY

APR-SEP

260

67

78

56

388

SALT RIVER
Etna nr, WY

APR-JUL
APR-SEP

215
270

67
68

88
84

47
51

319
399

HENRYS FORK
Ashton nr, ID
St. Anthony, ID
Rexburg nr, ID

APR-SEP
APR-JUL
APR-JUL

670
620
1070

92
91
88

100
108
103

84
74
72

730
678
1219

FALLS RIVER
Squirrel nr, ID (1)

APR-JUL

315

87

102

71

364

TETON RIVER
St. Anthony nr, ID

APR-JUL
APR-SEP

335
415

88
88

103
100

74
77

380
471

BIG LOST RIVER
Mackay Reservoir Inflow, ID

APR-JUL
APR-SEP

99
120

66
66

108
101

24
31

150
182

LITTLE LOST RIVER
Howe nr, ID

APR-SEP

38

88

102

74

43

PORTNEUF RIVER
Topaz, ID

MAR-SEP
APR-SEP

78
64

73
69

85
81

61
57

107
93

GOOSE CREEK
Oakley Res Inflow, ID

MAR-SEP

21

58

94

26

36

SALMON FALLS CREEK
San Jacinto nr, NV

MAR-SEP

54

56

94

18

96

BIG WOOD RIVER
Hailey, ID (1)

Magic Reservoir Inflow, ID

APR-JUL
APR-SEP
APR-JUL
APR-SEP

166
187
163
171

65
65
55
55

96
93
98
99

34
38
18
18

254
286
295
309